6661135248 has 80 divisors (see below), whose sum is σ = 18130744320. Its totient is φ = 2103184512.

The previous prime is 6661135213. The next prime is 6661135253. The reversal of 6661135248 is 8425311666.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84423 + ... + 143001.

It is an arithmetic number, because the mean of its divisors is an integer number (226634304).

Almost surely, 2^6661135248 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6661135248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9065372160).

6661135248 is an abundant number, since it is smaller than the sum of its proper divisors (11469609072).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6661135248 is a wasteful number, since it uses less digits than its factorization.

6661135248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58716 (or 58710 counting only the distinct ones).

The product of its digits is 207360, while the sum is 42.

The square root of 6661135248 is about 81615.7781804474. The cubic root of 6661135248 is about 1881.5513873076.

The spelling of 6661135248 in words is "six billion, six hundred sixty-one million, one hundred thirty-five thousand, two hundred forty-eight".